* 2002-04-20
* IPV6 support added by Bart Visscher <magick@linux-fan.com>
*
+ * 2008-07-10
+ * optional '-p' flag support ported from net-tools by G. Somlo <somlo@cmu.edu>
+ *
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
#include "inet_common.h"
+#define NETSTAT_OPTS "laentuwx" \
+ USE_ROUTE( "r") \
+ USE_FEATURE_NETSTAT_WIDE("W") \
+ USE_FEATURE_NETSTAT_PRG( "p")
+
enum {
- OPT_extended = 0x4,
- OPT_showroute = 0x100,
- OPT_widedisplay = 0x200 * ENABLE_FEATURE_NETSTAT_WIDE,
+ OPTBIT_KEEP_OLD = 7,
+ USE_ROUTE( OPTBIT_ROUTE,)
+ USE_FEATURE_NETSTAT_WIDE(OPTBIT_WIDE ,)
+ USE_FEATURE_NETSTAT_PRG( OPTBIT_PRG ,)
+ OPT_sock_listen = 1 << 0, // l
+ OPT_sock_all = 1 << 1, // a
+ OPT_extended = 1 << 2, // e
+ OPT_noresolve = 1 << 3, // n
+ OPT_sock_tcp = 1 << 4, // t
+ OPT_sock_udp = 1 << 5, // u
+ OPT_sock_raw = 1 << 6, // w
+ OPT_sock_unix = 1 << 7, // x
+ OPT_route = USE_ROUTE( (1 << OPTBIT_ROUTE)) + 0, // r
+ OPT_wide = USE_FEATURE_NETSTAT_WIDE((1 << OPTBIT_WIDE )) + 0, // W
+ OPT_prg = USE_FEATURE_NETSTAT_PRG( (1 << OPTBIT_PRG )) + 0, // p
};
-# define NETSTAT_OPTS "laentuwxr"USE_FEATURE_NETSTAT_WIDE("W")
#define NETSTAT_CONNECTED 0x01
#define NETSTAT_LISTENING 0x02
#define NETSTAT_UNIX 0x80
#define NETSTAT_ALLPROTO (NETSTAT_TCP|NETSTAT_UDP|NETSTAT_RAW|NETSTAT_UNIX)
-static smallint flags = NETSTAT_CONNECTED | NETSTAT_ALLPROTO;
enum {
TCP_ESTABLISHED = 1,
TCP_CLOSE_WAIT,
TCP_LAST_ACK,
TCP_LISTEN,
- TCP_CLOSING /* now a valid state */
+ TCP_CLOSING, /* now a valid state */
};
-static const char * const tcp_state[] =
-{
+static const char *const tcp_state[] = {
"",
"ESTABLISHED",
"SYN_SENT",
/* Standard printout size */
#define PRINT_IP_MAX_SIZE 23
-#define PRINT_NET_CONN "%s %6ld %6ld %-23s %-23s %-12s\n"
-#define PRINT_NET_CONN_HEADER "\nProto Recv-Q Send-Q %-23s %-23s State\n"
+#define PRINT_NET_CONN "%s %6ld %6ld %-23s %-23s %-12s"
+#define PRINT_NET_CONN_HEADER "\nProto Recv-Q Send-Q %-23s %-23s State "
/* When there are IPv6 connections the IPv6 addresses will be
* truncated to none-recognition. The '-W' option makes the
* xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:ddd.ddd.ddd.ddd
*/
#define PRINT_IP_MAX_SIZE_WIDE 51 /* INET6_ADDRSTRLEN + 5 for the port number */
-#define PRINT_NET_CONN_WIDE "%s %6ld %6ld %-51s %-51s %-12s\n"
-#define PRINT_NET_CONN_HEADER_WIDE "\nProto Recv-Q Send-Q %-51s %-51s State\n"
+#define PRINT_NET_CONN_WIDE "%s %6ld %6ld %-51s %-51s %-12s"
+#define PRINT_NET_CONN_HEADER_WIDE "\nProto Recv-Q Send-Q %-51s %-51s State "
-static const char *net_conn_line = PRINT_NET_CONN;
+
+#define PROGNAME_WIDTH 20
+#define PROGNAME_WIDTH_STR "20"
+/* PROGNAME_WIDTH chars: 12345678901234567890 */
+#define PROGNAME_BANNER "PID/Program name "
+
+struct prg_node {
+ struct prg_node *next;
+ long inode;
+ char name[PROGNAME_WIDTH];
+};
+
+#define PRG_HASH_SIZE 211
+
+
+struct globals {
+ const char *net_conn_line;
+ smallint flags;
+#if ENABLE_FEATURE_NETSTAT_PRG
+ smallint prg_cache_loaded;
+ struct prg_node *prg_hash[PRG_HASH_SIZE];
+#endif
+};
+#define G (*ptr_to_globals)
+#define flags (G.flags )
+#define net_conn_line (G.net_conn_line )
+#define prg_hash (G.prg_hash )
+#define prg_cache_loaded (G.prg_cache_loaded)
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+ flags = NETSTAT_CONNECTED | NETSTAT_ALLPROTO; \
+ net_conn_line = PRINT_NET_CONN; \
+} while (0)
+
+
+#if ENABLE_FEATURE_NETSTAT_PRG
+
+/* Deliberately truncating long to unsigned *int* */
+#define PRG_HASHIT(x) ((unsigned)(x) % PRG_HASH_SIZE)
+
+#define print_progname_banner() do { \
+ if (option_mask32 & OPT_prg) printf(PROGNAME_BANNER); \
+} while (0)
+
+static void prg_cache_add(long inode, char *name)
+{
+ unsigned hi = PRG_HASHIT(inode);
+ struct prg_node **pnp, *pn;
+
+ prg_cache_loaded = 2;
+ for (pnp = prg_hash + hi; (pn = *pnp) != NULL; pnp = &pn->next) {
+ if (pn->inode == inode) {
+ /* Some warning should be appropriate here
+ as we got multiple processes for one i-node */
+ return;
+ }
+ }
+ *pnp = xzalloc(sizeof(struct prg_node));
+ pn = *pnp;
+ pn->inode = inode;
+ safe_strncpy(pn->name, name, PROGNAME_WIDTH);
+}
+
+static const char *prg_cache_get(long inode)
+{
+ unsigned hi = PRG_HASHIT(inode);
+ struct prg_node *pn;
+
+ for (pn = prg_hash[hi]; pn; pn = pn->next)
+ if (pn->inode == inode)
+ return pn->name;
+ return "-";
+}
+
+#if ENABLE_FEATURE_CLEAN_UP
+static void prg_cache_clear(void)
+{
+ struct prg_node **pnp, *pn;
+
+ for (pnp = prg_hash; pnp < prg_hash + PRG_HASH_SIZE; pnp++) {
+ while ((pn = *pnp) != NULL) {
+ *pnp = pn->next;
+ free(pn);
+ }
+ }
+}
+#else
+#define prg_cache_clear() ((void)0)
+#endif
+
+static long extract_socket_inode(const char *lname)
+{
+ long inode = -1;
+
+ if (strncmp(lname, "socket:[", sizeof("socket:[")-1) == 0) {
+ /* "socket:[12345]", extract the "12345" as inode */
+ inode = bb_strtol(lname + sizeof("socket:[")-1, (char**)&lname, 0);
+ if (*lname != ']')
+ inode = -1;
+ } else if (strncmp(lname, "[0000]:", sizeof("[0000]:")-1) == 0) {
+ /* "[0000]:12345", extract the "12345" as inode */
+ inode = bb_strtol(lname + sizeof("[0000]:")-1, NULL, 0);
+ if (errno) /* not NUL terminated? */
+ inode = -1;
+ }
+
+#if 0 /* bb_strtol returns all-ones bit pattern on ERANGE anyway */
+ if (errno == ERANGE)
+ inode = -1;
+#endif
+ return inode;
+}
+
+static int FAST_FUNC file_act(const char *fileName,
+ struct stat *statbuf UNUSED_PARAM,
+ void *userData,
+ int depth UNUSED_PARAM)
+{
+ char *linkname;
+ long inode;
+
+ linkname = xmalloc_readlink(fileName);
+ if (linkname != NULL) {
+ inode = extract_socket_inode(linkname);
+ free(linkname);
+ if (inode >= 0)
+ prg_cache_add(inode, (char *)userData);
+ }
+ return TRUE;
+}
+
+static int FAST_FUNC dir_act(const char *fileName,
+ struct stat *statbuf UNUSED_PARAM,
+ void *userData UNUSED_PARAM,
+ int depth)
+{
+ const char *shortName;
+ char *p, *q;
+ char cmdline_buf[512];
+ int i;
+
+ if (depth == 0) /* "/proc" itself */
+ return TRUE; /* continue looking one level below /proc */
+
+ shortName = fileName + sizeof("/proc/")-1; /* point after "/proc/" */
+ if (!isdigit(shortName[0])) /* skip /proc entries whic aren't processes */
+ return SKIP;
+
+ p = concat_path_file(fileName, "cmdline"); /* "/proc/PID/cmdline" */
+ i = open_read_close(p, cmdline_buf, sizeof(cmdline_buf) - 1);
+ free(p);
+ if (i < 0)
+ return FALSE;
+ cmdline_buf[i] = '\0';
+ q = concat_path_file(shortName, bb_basename(cmdline_buf)); /* "PID/argv0" */
+
+ /* go through all files in /proc/PID/fd */
+ p = concat_path_file(fileName, "fd");
+ i = recursive_action(p, ACTION_RECURSE | ACTION_QUIET,
+ file_act, NULL, (void *)q, 0);
+
+ free(p);
+ free(q);
+
+ if (!i)
+ return FALSE; /* signal permissions error to caller */
+
+ return SKIP; /* caller should not recurse further into this dir. */
+}
+
+static void prg_cache_load(void)
+{
+ int load_ok;
+
+ prg_cache_loaded = 1;
+ load_ok = recursive_action("/proc", ACTION_RECURSE | ACTION_QUIET,
+ NULL, dir_act, NULL, 0);
+ if (load_ok)
+ return;
+
+ if (prg_cache_loaded == 1)
+ bb_error_msg("can't scan /proc - are you root?");
+ else
+ bb_error_msg("showing only processes with your user ID");
+}
+
+#else
+
+#define prg_cache_clear() ((void)0)
+#define print_progname_banner() ((void)0)
+
+#endif //ENABLE_FEATURE_NETSTAT_PRG
#if ENABLE_FEATURE_IPV6
((struct sockaddr *) localaddr)->sa_family = AF_INET;
}
-static const char *get_sname(int port, const char *proto, int num)
+static const char *get_sname(int port, const char *proto, int numeric)
{
- /* hummm, we return static buffer here!! */
- const char *str = itoa(ntohs(port));
- if (!num) {
+ if (!port)
+ return "*";
+ if (!numeric) {
struct servent *se = getservbyport(port, proto);
if (se)
- str = se->s_name;
+ return se->s_name;
}
- if (!port) {
- str = "*";
- }
- return str;
+ /* hummm, we may return static buffer here!! */
+ return itoa(ntohs(port));
}
-static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, const char *proto, int numeric)
+static char *ip_port_str(struct sockaddr *addr, int port, const char *proto, int numeric)
{
- const char *port_name;
- int max_len;
- int port_name_len;
+ char *host, *host_port;
-// TODO: replace by xmalloc_sockaddr2host?
-#if ENABLE_FEATURE_IPV6
- if (addr->sa_family == AF_INET6) {
- INET6_rresolve(ip_port, size, (struct sockaddr_in6 *)addr,
- (numeric & NETSTAT_NUMERIC) ? 0x0fff : 0);
- } else
-#endif
- {
- INET_rresolve(ip_port, size, (struct sockaddr_in *)addr,
- 0x4000 | ((numeric & NETSTAT_NUMERIC) ? 0x0fff : 0),
- 0xffffffff);
- }
- port_name = get_sname(htons(port), proto, numeric);
-
- max_len = (option_mask32 & OPT_widedisplay)
- ? (PRINT_IP_MAX_SIZE_WIDE - 1)
- : (PRINT_IP_MAX_SIZE - 1);
- port_name_len = strlen(port_name);
- if ((strlen(ip_port) + port_name_len) > max_len)
- ip_port[max_len - port_name_len] = '\0';
- ip_port += strlen(ip_port);
- *ip_port++ = ':';
- strcpy(ip_port, port_name);
+ /* Code which used "*" for INADDR_ANY is removed: it's ambiguous
+ * in IPv6, while "0.0.0.0" is not. */
+
+ host = numeric ? xmalloc_sockaddr2dotted_noport(addr)
+ : xmalloc_sockaddr2host_noport(addr);
+
+ host_port = xasprintf("%s:%s", host, get_sname(htons(port), proto, numeric));
+ free(host);
+ return host_port;
}
-static void tcp_do_one(int lnr, const char *line)
-{
- char local_addr[64], rem_addr[64];
- char more[512];
- int num, local_port, rem_port, d, state, timer_run, uid, timeout;
+struct inet_params {
+ int local_port, rem_port, state, uid;
#if ENABLE_FEATURE_IPV6
struct sockaddr_in6 localaddr, remaddr;
#else
struct sockaddr_in localaddr, remaddr;
#endif
- unsigned long rxq, txq, time_len, retr, inode;
+ unsigned long rxq, txq, inode;
+};
- if (lnr == 0)
- return;
+static int scan_inet_proc_line(struct inet_params *param, char *line)
+{
+ int num;
+ char local_addr[64], rem_addr[64];
- more[0] = '\0';
num = sscanf(line,
- "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
- &d, local_addr, &local_port,
- rem_addr, &rem_port, &state,
- &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
+ "%*d: %64[0-9A-Fa-f]:%X "
+ "%64[0-9A-Fa-f]:%X %X "
+ "%lX:%lX %*X:%*X "
+ "%*X %d %*d %ld ",
+ local_addr, ¶m->local_port,
+ rem_addr, ¶m->rem_port, ¶m->state,
+ ¶m->txq, ¶m->rxq,
+ ¶m->uid, ¶m->inode);
+ if (num < 9) {
+ return 1; /* error */
+ }
if (strlen(local_addr) > 8) {
#if ENABLE_FEATURE_IPV6
- build_ipv6_addr(local_addr, &localaddr);
- build_ipv6_addr(rem_addr, &remaddr);
+ build_ipv6_addr(local_addr, ¶m->localaddr);
+ build_ipv6_addr(rem_addr, ¶m->remaddr);
#endif
} else {
- build_ipv4_addr(local_addr, &localaddr);
- build_ipv4_addr(rem_addr, &remaddr);
- }
-
- if (num < 10) {
- bb_error_msg("warning, got bogus tcp line");
- return;
+ build_ipv4_addr(local_addr, ¶m->localaddr);
+ build_ipv4_addr(rem_addr, ¶m->remaddr);
}
+ return 0;
+}
- if ((rem_port && (flags & NETSTAT_CONNECTED))
- || (!rem_port && (flags & NETSTAT_LISTENING))
+static void print_inet_line(struct inet_params *param,
+ const char *state_str, const char *proto, int is_connected)
+{
+ if ((is_connected && (flags & NETSTAT_CONNECTED))
+ || (!is_connected && (flags & NETSTAT_LISTENING))
) {
- snprint_ip_port(local_addr, sizeof(local_addr),
- (struct sockaddr *) &localaddr, local_port,
- "tcp", flags & NETSTAT_NUMERIC);
- snprint_ip_port(rem_addr, sizeof(rem_addr),
- (struct sockaddr *) &remaddr, rem_port,
- "tcp", flags & NETSTAT_NUMERIC);
+ char *l = ip_port_str(
+ (struct sockaddr *) ¶m->localaddr, param->local_port,
+ proto, flags & NETSTAT_NUMERIC);
+ char *r = ip_port_str(
+ (struct sockaddr *) ¶m->remaddr, param->rem_port,
+ proto, flags & NETSTAT_NUMERIC);
printf(net_conn_line,
- "tcp", rxq, txq, local_addr, rem_addr, tcp_state[state]);
+ proto, param->rxq, param->txq, l, r, state_str);
+#if ENABLE_FEATURE_NETSTAT_PRG
+ if (option_mask32 & OPT_prg)
+ printf("%."PROGNAME_WIDTH_STR"s", prg_cache_get(param->inode));
+#endif
+ bb_putchar('\n');
+ free(l);
+ free(r);
}
}
-static void udp_do_one(int lnr, const char *line)
+static int FAST_FUNC tcp_do_one(char *line)
{
- char local_addr[64], rem_addr[64];
- const char *state_str;
- char more[512];
- int num, local_port, rem_port, d, state, timer_run, uid, timeout;
-#if ENABLE_FEATURE_IPV6
- struct sockaddr_in6 localaddr, remaddr;
-#else
- struct sockaddr_in localaddr, remaddr;
-#endif
- unsigned long rxq, txq, time_len, retr, inode;
-
- if (lnr == 0)
- return;
-
- more[0] = '\0';
- num = sscanf(line,
- "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
- &d, local_addr, &local_port,
- rem_addr, &rem_port, &state,
- &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
+ struct inet_params param;
- if (strlen(local_addr) > 8) {
-#if ENABLE_FEATURE_IPV6
- /* Demangle what the kernel gives us */
- build_ipv6_addr(local_addr, &localaddr);
- build_ipv6_addr(rem_addr, &remaddr);
-#endif
- } else {
- build_ipv4_addr(local_addr, &localaddr);
- build_ipv4_addr(rem_addr, &remaddr);
- }
+ if (scan_inet_proc_line(¶m, line))
+ return 1;
- if (num < 10) {
- bb_error_msg("warning, got bogus udp line");
- return;
- }
- switch (state) {
- case TCP_ESTABLISHED:
- state_str = "ESTABLISHED";
- break;
- case TCP_CLOSE:
- state_str = "";
- break;
- default:
- state_str = "UNKNOWN";
- break;
- }
+ print_inet_line(¶m, tcp_state[param.state], "tcp", param.rem_port);
+ return 0;
+}
#if ENABLE_FEATURE_IPV6
# define notnull(A) ( \
#else
# define notnull(A) (A.sin_addr.s_addr)
#endif
- {
- int have_remaddr = notnull(remaddr);
- if ((have_remaddr && (flags & NETSTAT_CONNECTED))
- || (!have_remaddr && (flags & NETSTAT_LISTENING))
- ) {
- snprint_ip_port(local_addr, sizeof(local_addr),
- (struct sockaddr *) &localaddr, local_port,
- "udp", flags & NETSTAT_NUMERIC);
- snprint_ip_port(rem_addr, sizeof(rem_addr),
- (struct sockaddr *) &remaddr, rem_port,
- "udp", flags & NETSTAT_NUMERIC);
- printf(net_conn_line,
- "udp", rxq, txq, local_addr, rem_addr, state_str);
- }
- }
-}
-static void raw_do_one(int lnr, const char *line)
+static int FAST_FUNC udp_do_one(char *line)
{
- char local_addr[64], rem_addr[64];
- char more[512];
- int num, local_port, rem_port, d, state, timer_run, uid, timeout;
-#if ENABLE_FEATURE_IPV6
- struct sockaddr_in6 localaddr, remaddr;
-#else
- struct sockaddr_in localaddr, remaddr;
-#endif
- unsigned long rxq, txq, time_len, retr, inode;
-
- if (lnr == 0)
- return;
+ int have_remaddr;
+ const char *state_str;
+ struct inet_params param;
+
+ if (scan_inet_proc_line(¶m, line))
+ return 1;
+
+ state_str = "UNKNOWN";
+ switch (param.state) {
+ case TCP_ESTABLISHED:
+ state_str = "ESTABLISHED";
+ break;
+ case TCP_CLOSE:
+ state_str = "";
+ break;
+ }
- more[0] = '\0';
- num = sscanf(line,
- "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX %d %d %ld %512s\n",
- &d, local_addr, &local_port,
- rem_addr, &rem_port, &state,
- &txq, &rxq, &timer_run, &time_len, &retr, &uid, &timeout, &inode, more);
+ have_remaddr = notnull(param.remaddr);
+ print_inet_line(¶m, state_str, "udp", have_remaddr);
+ return 0;
+}
- if (strlen(local_addr) > 8) {
-#if ENABLE_FEATURE_IPV6
- build_ipv6_addr(local_addr, &localaddr);
- build_ipv6_addr(rem_addr, &remaddr);
-#endif
- } else {
- build_ipv4_addr(local_addr, &localaddr);
- build_ipv4_addr(rem_addr, &remaddr);
- }
+static int FAST_FUNC raw_do_one(char *line)
+{
+ int have_remaddr;
+ struct inet_params param;
- if (num < 10) {
- bb_error_msg("warning, got bogus raw line");
- return;
- }
+ if (scan_inet_proc_line(¶m, line))
+ return 1;
- {
- int have_remaddr = notnull(remaddr);
- if ((have_remaddr && (flags & NETSTAT_CONNECTED))
- || (!have_remaddr && (flags & NETSTAT_LISTENING))
- ) {
- snprint_ip_port(local_addr, sizeof(local_addr),
- (struct sockaddr *) &localaddr, local_port,
- "raw", flags & NETSTAT_NUMERIC);
- snprint_ip_port(rem_addr, sizeof(rem_addr),
- (struct sockaddr *) &remaddr, rem_port,
- "raw", flags & NETSTAT_NUMERIC);
- printf(net_conn_line,
- "raw", rxq, txq, local_addr, rem_addr, itoa(state));
- }
- }
+ have_remaddr = notnull(param.remaddr);
+ print_inet_line(¶m, itoa(param.state), "raw", have_remaddr);
+ return 0;
}
-static void unix_do_one(int nr, const char *line)
+static int FAST_FUNC unix_do_one(char *line)
{
- static smallint has_inode = 0;
-
- char path[PATH_MAX], ss_flags[32];
- const char *ss_proto, *ss_state, *ss_type;
- int num, state, type, inode;
- void *d;
unsigned long refcnt, proto, unix_flags;
+ unsigned long inode;
+ int type, state;
+ int num, path_ofs;
+ const char *ss_proto, *ss_state, *ss_type;
+ char ss_flags[32];
- if (nr == 0) {
- if (strstr(line, "Inode"))
- has_inode = 1;
- return;
- }
- path[0] = '\0';
- num = sscanf(line, "%p: %lX %lX %lX %X %X %d %s",
- &d, &refcnt, &proto, &unix_flags, &type, &state, &inode, path);
+ /* 2.6.15 may report lines like "... @/tmp/fam-user-^@^@^@^@^@^@^@..."
+ * Other users report long lines filled by NUL bytes.
+ * (those ^@ are NUL bytes too). We see them as empty lines. */
+ if (!line[0])
+ return 0;
+
+ path_ofs = 0; /* paranoia */
+ num = sscanf(line, "%*p: %lX %lX %lX %X %X %lu %n",
+ &refcnt, &proto, &unix_flags, &type, &state, &inode, &path_ofs);
if (num < 6) {
- bb_error_msg("warning, got bogus unix line");
- return;
+ return 1; /* error */
}
- if (!has_inode)
- sprintf(path, "%d", inode);
-
if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) != (NETSTAT_LISTENING|NETSTAT_CONNECTED)) {
if ((state == SS_UNCONNECTED) && (unix_flags & SO_ACCEPTCON)) {
if (!(flags & NETSTAT_LISTENING))
- return;
+ return 0;
} else {
if (!(flags & NETSTAT_CONNECTED))
- return;
+ return 0;
}
}
strcat(ss_flags, "N ");
strcat(ss_flags, "]");
- printf("%-5s %-6ld %-11s %-10s %-13s ",
- ss_proto, refcnt, ss_flags, ss_type, ss_state);
- if (has_inode)
- printf("%-6d ", inode);
- else
- printf("- ");
- puts(path);
-}
+ printf("%-5s %-6ld %-11s %-10s %-13s %6lu ",
+ ss_proto, refcnt, ss_flags, ss_type, ss_state, inode
+ );
+
+#if ENABLE_FEATURE_NETSTAT_PRG
+ if (option_mask32 & OPT_prg)
+ printf("%-"PROGNAME_WIDTH_STR"s", prg_cache_get(inode));
+#endif
-#define _PATH_PROCNET_UDP "/proc/net/udp"
-#define _PATH_PROCNET_UDP6 "/proc/net/udp6"
-#define _PATH_PROCNET_TCP "/proc/net/tcp"
-#define _PATH_PROCNET_TCP6 "/proc/net/tcp6"
-#define _PATH_PROCNET_RAW "/proc/net/raw"
-#define _PATH_PROCNET_RAW6 "/proc/net/raw6"
-#define _PATH_PROCNET_UNIX "/proc/net/unix"
+ /* TODO: currently we stop at first NUL byte. Is it a problem? */
+ line += path_ofs;
+ *strchrnul(line, '\n') = '\0';
+ while (*line)
+ fputc_printable(*line++, stdout);
+ bb_putchar('\n');
+ return 0;
+}
-static void do_info(const char *file, const char *name, void (*proc)(int, const char *))
+static void do_info(const char *file, int FAST_FUNC (*proc)(char *))
{
- int lnr = 0;
+ int lnr;
FILE *procinfo;
+ char *buffer;
- procinfo = fopen(file, "r");
+ /* _stdin is just to save "r" param */
+ procinfo = fopen_or_warn_stdin(file);
if (procinfo == NULL) {
- if (errno != ENOENT) {
- bb_perror_msg("%s", file);
- } else {
- bb_error_msg("no support for '%s' on this system", name);
- }
return;
}
- do {
- char *buffer = xmalloc_fgets(procinfo);
- if (buffer) {
- (proc)(lnr++, buffer);
- free(buffer);
- }
- } while (!feof(procinfo));
+ lnr = 0;
+ /* Why xmalloc_fgets_str? because it doesn't stop on NULs */
+ while ((buffer = xmalloc_fgets_str(procinfo, "\n")) != NULL) {
+ /* line 0 is skipped */
+ if (lnr && proc(buffer))
+ bb_error_msg("%s: bogus data on line %d", file, lnr + 1);
+ lnr++;
+ free(buffer);
+ }
fclose(procinfo);
}
-/*
- * Our main function.
- */
-
-int netstat_main(int argc, char **argv);
-int netstat_main(int argc, char **argv)
+int netstat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int netstat_main(int argc UNUSED_PARAM, char **argv)
{
const char *net_conn_line_header = PRINT_NET_CONN_HEADER;
unsigned opt;
-#if ENABLE_FEATURE_IPV6
- smallint inet = 1;
- smallint inet6 = 1;
-#else
- enum { inet = 1, inet6 = 0 };
-#endif
+
+ INIT_G();
/* Option string must match NETSTAT_xxx constants */
- opt = getopt32(argc, argv, NETSTAT_OPTS);
+ opt = getopt32(argv, NETSTAT_OPTS);
if (opt & 0x1) { // -l
flags &= ~NETSTAT_CONNECTED;
flags |= NETSTAT_LISTENING;
//if (opt & 0x20) // -u: NETSTAT_UDP
//if (opt & 0x40) // -w: NETSTAT_RAW
//if (opt & 0x80) // -x: NETSTAT_UNIX
- if (opt & OPT_showroute) { // -r
+ if (opt & OPT_route) { // -r
#if ENABLE_ROUTE
bb_displayroutes(flags & NETSTAT_NUMERIC, !(opt & OPT_extended));
return 0;
bb_show_usage();
#endif
}
-
- if (opt & OPT_widedisplay) { // -W
+ if (opt & OPT_wide) { // -W
net_conn_line = PRINT_NET_CONN_WIDE;
net_conn_line_header = PRINT_NET_CONN_HEADER_WIDE;
}
+#if ENABLE_FEATURE_NETSTAT_PRG
+ if (opt & OPT_prg) { // -p
+ prg_cache_load();
+ }
+#endif
opt &= NETSTAT_ALLPROTO;
if (opt) {
else
printf("(w/o servers)");
printf(net_conn_line_header, "Local Address", "Foreign Address");
+ print_progname_banner();
+ bb_putchar('\n');
}
- if (inet && flags & NETSTAT_TCP)
- do_info(_PATH_PROCNET_TCP, "AF INET (tcp)", tcp_do_one);
+ if (flags & NETSTAT_TCP) {
+ do_info("/proc/net/tcp", tcp_do_one);
#if ENABLE_FEATURE_IPV6
- if (inet6 && flags & NETSTAT_TCP)
- do_info(_PATH_PROCNET_TCP6, "AF INET6 (tcp)", tcp_do_one);
+ do_info("/proc/net/tcp6", tcp_do_one);
#endif
- if (inet && flags & NETSTAT_UDP)
- do_info(_PATH_PROCNET_UDP, "AF INET (udp)", udp_do_one);
+ }
+ if (flags & NETSTAT_UDP) {
+ do_info("/proc/net/udp", udp_do_one);
#if ENABLE_FEATURE_IPV6
- if (inet6 && flags & NETSTAT_UDP)
- do_info(_PATH_PROCNET_UDP6, "AF INET6 (udp)", udp_do_one);
+ do_info("/proc/net/udp6", udp_do_one);
#endif
- if (inet && flags & NETSTAT_RAW)
- do_info(_PATH_PROCNET_RAW, "AF INET (raw)", raw_do_one);
+ }
+ if (flags & NETSTAT_RAW) {
+ do_info("/proc/net/raw", raw_do_one);
#if ENABLE_FEATURE_IPV6
- if (inet6 && flags & NETSTAT_RAW)
- do_info(_PATH_PROCNET_RAW6, "AF INET6 (raw)", raw_do_one);
+ do_info("/proc/net/raw6", raw_do_one);
#endif
+ }
if (flags & NETSTAT_UNIX) {
printf("Active UNIX domain sockets ");
if ((flags & (NETSTAT_LISTENING|NETSTAT_CONNECTED)) == (NETSTAT_LISTENING|NETSTAT_CONNECTED))
printf("(only servers)");
else
printf("(w/o servers)");
- printf("\nProto RefCnt Flags Type State I-Node Path\n");
- do_info(_PATH_PROCNET_UNIX, "AF UNIX", unix_do_one);
+ printf("\nProto RefCnt Flags Type State I-Node ");
+ print_progname_banner();
+ printf("Path\n");
+ do_info("/proc/net/unix", unix_do_one);
}
+ prg_cache_clear();
return 0;
}
projects / oweals / busybox.git / blobdiff